What Is the Explanation for Creatine Kinase (CK)levels in a 14-Year-Old

question 21

Multiple Choice

What is the explanation for creatine kinase (CK) levels in a 14-year-old boy with Duchenne muscular dystrophy being much lower now than they were 5 years ago?

• A)His disease is improving.
• B)He now performs passive rather than active exercise.
• C)Most of the muscle tissue has already been destroyed.
• D)The disease is probably Becker muscular dystrophy rather than Duchenne muscular dystrophy.

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